Is Tinsley Mortimer‘s “High Society” rival Devorah Rose plotting revenge by gunning for her own show? While CW suits are mum about whether “High Society” will be picked up for a second season, we hear Rose is due to jet to LA for meetings with producers about her own series. Pals of Rose — seen on “Society” waging a one-woman war against Tinsley — say she feels manipulated into playing the evil character. But an e-mail from Rose’s flack also describes her as “a household word around New York’s elite social circuit” who is “no doubt Hollywood-bound.” An executive of “Society” declined to comment.